qmail uses 100% cpu after FreeBSD-5.0 to 5.1 upgrade

[Tim Robbins]

On Sun, Jun 15, 2003 at 08:43:15PM -0400, Chris Shenton wrote:

> I've been running qmail for years and like it, installed pretty much
> per www.LifeWithQmail.org.  My main system was running FreeBSD
> 5.0-RELEASE and -CURRENT and qmail was fine.  When I just upgraded to
> 5.1-CURRENT a couple days back, the qmail-send process started using
> all CPU.

This looks like a bug in the named pipe code. Reverting
sys/fs/fifofs/fifo_vnops.c to the RELENG_5_0 version makes the problem go
away. I haven't tracked down exactly what change between RELENG_5_0 and
RELENG_5_1 caused the problem.


Tim